S1 Supporting Information for Comparison of the magnetic anisotropy and spin relaxation phenomenon of dinuclear terbium(III) phthalocyaninato single molecule magnets using the geometric spin arrangement Takaumi Morita 1 , Marko Damjanović 2,5 , Keiichi Katoh 1* , Yasutaka Kitagawa 3 , Nobuhiro Yasuda 4 , Yanhua Lan 5 , Wolfgang Wernsdorfer, 5,6 Brian K. Breedlove 1 , Markus Enders 2* and Masahiro Yamashita 1,7* 1 Department of Chemistry, Graduate School of Science, Tohoku University, 63, Aramaki AzaAoba, Aobaku, Sendai, Miyagi 9808578, Japan. 2 Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D 69120 Heidelberg, Germany. 3 Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 11 Machikaneyama, Toyonaka, Osaka 5608531, Japan. 4 Japan Synchrotron Radiation Research Institute (JASRI), 111, Kouto, Sayocho, Sayogun, Hyogo 6795198, Japan. 5 Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, WolfgangGaedeStrasse 1, 76131 Karlsruhe, Germany. 6 CNRS and Université Grenoble Alpes, Institut Néel, 38042 Grenoble, France. 7 WPI Research Center, Advanced Institute for Materials Research, Tohoku University, 211 Katahira, Aobaku, Sendai 9808577, Japan. Corresponding Authors Phone; +81227953878. Fax: +81227956548. Email: kkatoh@m.tohoku.ac.jp (K.K.) Phone; +496221546247. Fax: +496221541616247. Email: markus.enders@uniheidelberg.de (M.E.) Phone; +81227956544. Fax: +81227956548. Email: yamasita@agnus.chem.tohoku.ac.jp (M.Y.)